chuech and heryey smith



@uitrit gieten gardent @fitta B. O. CHURCH AND HERVEY SMITH, OFBRATTLEBORO, VERMONT.

Letters Patent No. 72,369, dated December'l', 1867.

IMPROVEMENT 1N oReANs, at.A

TO ALL WHOM IT MAY CONCERN:

Be it known that we, B. O. CHURCH and HERVEY SMITH, of Brattleboi'o,State of Vermont, have invented certain new and useful Improvements inManual Sub-Bass of Organs; and we do hereby declare that the followingis a full and exact description thereof, reference being had to theaccompanying drawings, and to the letters of reference marked thereon.

This invention consistsin the improved ,arrangement of keys operatingthe valves of the pipes, whereby a better action is obtained, and thelevers and valves more readily removed when it is necessary to adjust oralter the pipes stopped by the valves. In the drawings- Figure 1 shows aside view of a key having our improvements, in its natural position,with the valve shut, and

Figure 2 the same pressed down, with the valve open, while Figure 3 is adetail side section of the fulcrum used in our arrangement, showing themanner-'in which it` is held in place.

Figure 4 is a side view of a similar arrangement.

In figs. 1 and 2, A is the key, hinged at one end, above the key-boardB, at o, which is stationary, and beneath which is the fulcrum E of thelever C. This lever C has at one end the valve D, which stops the pipeGwhen shut down, and-'at the other end, on the shorter arm of the lever,a pin, a, which passesup through a slot in the key-board B, and uponwhich-the bottom side of the key A rests. The fulcrum E is placed nearthis end, so that A afgreater reach is obtained on the end of the leverhaving the valve.

The key A, in its ordinary position, when not operated, is up, as shownin iig. 1A; but on being pressed down it presses down also the pin a,depressing that end of the lever C, and elevating the other or longerend, having the valve D, thus giving free opening to the pipe G. The keyA also presses down another pin,f, operating 'a valve below, shown at F,the mechanism of which lifts the key to its place again when pressurehsremoved from the latter. This, however, not forming a part of ourinvention, we will not further describe.

The fulcrum E is formed of a single piece, bevelled at its top edge,upon which rests the lever C, which may be kept in place by a smallpin,7c, either in the fulcrum `or lever itself. In fig. 3 is shown themanner in which this fulcrum is held, which consists in placing at eachend of it ears d ci, attached to the key-board B. At one end of thepieceE is set in a pin, c, which fits into a corresponding socket in theear next to it, whilethe other end of the piece E has a screw, b, whichpasses through the ear and into the fulcrum. In this manner the latteris held firmly, while at the same time it can be easily taken out orreplaced by simply unscrewing tbe screw b.

The pin a, upon the shorter end oi' the lever C, may have threads cutupon'it, so that the lift of the valve may be altered orthe leverproperly adjusted to the key.

By this means we obtain a simple and effective device for the purposes,working more freely and easily than the oldermethods of arranging them.As the keys cannot be disarranged by the levers, there is no possibilityof leakage in any of the other valves which are connected with them, andthe tuner, in arranging or resetting the reeds of the sub-bass, canreadily move the lever, having the corresponding valve attached, to oneside, while his key is alwaysin its proper position for him to test hisreed.

New, having described our invention, what we claim as new, and desire tosecure by Letters Patent, is-

The bevelled piece E, in combination with`the levers C, frame B, andscrew-pins a, forming a fulcrum for the levers C, and holding them inplace by means of the pins 7c, substantially as shown and described.

B. O. CHURCH, HERVEY SMITH;

Witnesses:

L. B. Monav, S. K. FnssnNnnN.

